The Plates of a Parallel Plate Capacitor Each Have an Area

Multiple Choice

The plates of a parallel plate capacitor each have an area of 0.40 m² and are separated by a distance of 0.02 m. They are charged until the potential difference between the plates is 3000 V. The charged capacitor is then isolated.
-Determine the value of the capacitance.

A) 9.0 × 10^-11 F
B) 1.8 × 10^-10 F
C) 3.6 × 10^-10 F
D) 4.8 × 10^-10 F
E) 6.4 × 10^-10 F